Water Level Indicator using 5 Transistor

This is the circuit diagram of a simple bane chargeless baptize akin indicator for home and industries. In actuality the the akin of any conductive non acerb liquids can be abstinent application this circuit. The circuit is based on 5 transistor switches. Anniversary transistor is switched on to drive the agnate LED , if its abject is...

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TDA1054 Hi Fi Stereo Preamplifier

This Hi Fi stereo preamplifier circuit is congenital with TDA1054 IC from SGS. TDA1054 is a 16-pin DIL amalgamation and integrates 2 abstracted preamp circuits. It is a low babble preamp with little or no botheration in the building process. The aboriginal bisected of the ambit (IC1a) it has an ascribe acuteness of 3 mV and has a abundance...

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SCR - DC Power Delay Circuit

The Circuit diagram apparent actuality is of DC power delay circuit that is based on an SCR. This circuit is a actual accessible one and can be active in abounding applications. The alive of this circuit is actual simple. If the ascribe ability is activated the capacitor C2 accuse through resistor R2 and if the voltage beyond the capacitor...

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Simple Electronic Code Lock with One Transistor

This is of advance simple electronic code lock circuit one can make. The circuit uses one transistor, a broadcast and few acquiescent components. The artlessness does not accept any access on the achievement and this ambit works absolutely fine.  The circuit is annihilation but a simple transistor about-face with a broadcast...

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BH1417 PLL Stereo FM Transmitter

The circuit shown here is of an execelent Stereo FM transmitter which will transmit top quality signals up to a range of 70 feet. The circuit is based on BH1417 PLL stereo transmitter IC from Rhom semiconductors. The IC has separate audio processing sections for the left and right channels, pre emphasis circuit for improving signal to noise...

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TDA4935 Bridge Amplifier Circuit

TDA4935 is 2x15W top quality audio amplifier IC from Siemens. The IC can be employed in stereo mode or bridge mode. In stereo mode it will deliver 15W per channel and in bridge mode it will deliver 30W into a 8 ohm load at 30V supply. TDA4935 needs very few external parts and contains a wide power supply voltage range. The IC operates in...

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Stereo Preamplifier using LA3161

LA3161 is an integrated 2 channel pre-amplifier intended for car stereo applications. The LA3161 has a integrated voltage regulator Which plays an excellent role in improving ripple rejection . The IC requires minimum number of external parts and the noise level is quite low. The IC has high input impedance (around 100K) and is also available...

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12V Battery LED Level Indicator circuit

In the circuit diagram LEDs D1 toD10 displays the extent of the battery in either dot or bargraph mode. Resistor R4 connected between pins 6, 7 and ground controls the brightness of the LEDs. Resistors R1 and POT R2 forms a voltage divider network and the POT R2 will be used for calibration.The circuit shown here is intended in order to...

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